Implement a dispatcher for prerender requests

This CL provides a dispatcher that can feed the prerender system with
HTML type requests that were prefetched.

One thing is missing though: this sends all requests in, and doesn't tag the
origin request.  Unfortunately referer information is often tossed out in
resource_dispatcher_host...

Is there a private place it's sent along to for this type of use?  I left that
undone right now but I'm open to suggestions about a good way to do it.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/4655004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@66790 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 9 insertions, 0 deletions

diff --git a/chrome/browser/io_thread.cc b/chrome/browser/io_thread.cc
index 65be41e..788c339 100644
--- a/chrome/browser/io_thread.cc
+++ b/chrome/browser/io_thread.cc
@@ -23,6 +23,7 @@
 #include "chrome/browser/net/connect_interceptor.h"
 #include "chrome/browser/net/passive_log_collector.h"
 #include "chrome/browser/net/predictor_api.h"
+#include "chrome/browser/net/prerender_interceptor.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/net/raw_host_resolver_proc.h"
@@ -332,6 +333,12 @@ void IOThread::Init() {
   globals_->dnsrr_resolver.reset(new net::DnsRRResolver);
   globals_->http_auth_handler_factory.reset(CreateDefaultAuthHandlerFactory(
       globals_->host_resolver.get()));
+
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnablePagePrerender)) {
+    prerender_interceptor_.reset(
+        new chrome_browser_net::PrerenderInterceptor());
+  }
 }
 
 void IOThread::CleanUp() {
@@ -386,6 +393,8 @@ void IOThread::CleanUp() {
   delete speculative_interceptor_;
   speculative_interceptor_ = NULL;
 
+  prerender_interceptor_.reset();
+
   // TODO(eroman): hack for http://crbug.com/15513
   if (globals_->host_resolver->GetAsHostResolverImpl()) {
     globals_->host_resolver.get()->GetAsHostResolverImpl()->Shutdown();